Multisig, timelocks, and why one wallet isn't enough. Gart Webinar, July 29, 2026.

About this episode

A single-key wallet has one weakness: one person, one device, or one moment can make you lose everything. The July 2026 Coldcard firmware flaw let attackers drain wallets whose seeds were generated with weak, predictable entropy. Multi-vendor multisig is the setup that defends against exactly that. In this one-hour session, Max Hillebrand explores multisig (multi-signature) wallets as a strategy to eliminate single points of failure by distributing access across multiple hardware devices and locations. It covers key concepts like quorum designs (m-of-n), why using different manufacturers matters, wallet descriptors and why you must back them up, and how timelocks make things like inheritance and a dead man's switch possible. The discussion emphasizes the importance of secure planning, regular maintenance, and choosing the right technical setup to balance security with operational complexity. Want our trainers to help you figure out what the best setup is for you? Book your private call here: https://gart.io/multisig Timestamps: - Introduction to Multisig Concepts: (0:00 - 3:32) - Single Point of Failure vs. Multisig: (3:32 - 6:03) - Threat Models and Security: (8:22 - 11:54) - Quorum Design (m-of-n): (12:18 - 15:39) - Hardware and Script Limits: (15:39 - 19:21) - The Ceremony of Wallet Setup: (19:21 - 27:35) - Timelocks and Inheritance: (27:37 - 32:00) - Technical Implementation with Miniscript: (43:27 - 49:01) - Maintenance and Recovery: (1:01:11 - 1:07:35) - Final Recommendations and Safety: (1:11:17 - 1:14:37) Recorded live in the Gart Digital Security Webinar Series. Check the largest database of known physical attacks on crypto holders at https://stats.gart.io Gart, the safety app that finds you without tracking you: https://gart.io/app In-person trainings and webinars: https://gart.io/events Digital and physical security advisory: https://gart.io/advisory ### Chapters - **0:00 — Introduction to Multisig Concepts** - **3:32 — Single Point of Failure vs. Multisig** - **8:22 — Threat Models and Security** - **12:18 — Quorum Design (m-of-n)** - **15:39 — Hardware and Script Limits** - **19:21 — The Ceremony of Wallet Setup** - **27:37 — Timelocks and Inheritance** - **43:27 — Technical Implementation with Miniscript** - **1:01:11 — Maintenance and Recovery** - **1:11:17 — Final Recommendations and Safety** Source: [Gart](https://www.youtube.com/watch?v=UPd-bTE6GPk)